Joining the former star of ITV's hit period drama are a host of famous faces including acting veteran John Hurt, Merlin's Katie McGrath, The Paradise's Emun Elliott, Harry Potter's Tom Felton, Vanessa Kirby, Sebastian Stan and John Lynch.

Labyrinth is based on the novel of the same name by Kate Mosse. Set in France during both 1209 and 2005, the tale interweaves the stories of two women, Alais (Brown Findlay) and Alice (Kirby). In the present day, archeologist Alice uncovers two shattered skeltons and a labyrinth-engraved ring in a long-undisturbed cave while 800 years ago in medieval France young herbalist Alais is entrusted with hiding the secrets contained within three sacred books.

Labyrinth was adapted by Adrian Hodges, co-creator of ITV's Primeval and the screenwriter for My Week with Marilyn.